Normalize whitespace in source files

Ensure that no source files have trailing whitespace at end of lines and ensure that all files end with a single trailing newline.

This also adds Github Actions to enforce whitespace conventions.

src-ui/src/app/components/common/input/check/check.component.ts

@@ -15,7 +15,7 @@ import { AbstractInputComponent } from '../abstract-input';
 })
 export class CheckComponent extends AbstractInputComponent<boolean> {
 
-  constructor() { 
+  constructor() {
     super()
   }